JP4533487B2 - Knee support - Google Patents

Knee support Download PDF

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Publication number
JP4533487B2
JP4533487B2 JP2000001624A JP2000001624A JP4533487B2 JP 4533487 B2 JP4533487 B2 JP 4533487B2 JP 2000001624 A JP2000001624 A JP 2000001624A JP 2000001624 A JP2000001624 A JP 2000001624A JP 4533487 B2 JP4533487 B2 JP 4533487B2
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Prior art keywords
knee
bag
support device
knee bag
quilting
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JP2000225911A (en
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ディークス ウーベ
クラッセン モーリス
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Takata Europe vehicle Safety Technology GmbH
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Takata Europe vehicle Safety Technology GmbH
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/231Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/233Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/215Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member
    • B60R21/216Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member comprising tether means for limitation of cover motion during deployment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/215Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member
    • B60R21/216Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member comprising tether means for limitation of cover motion during deployment
    • B60R2021/2161Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member comprising tether means for limitation of cover motion during deployment the cover being displaced towards the occupant during deployment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/231Inflatable members characterised by their shape, construction or spatial configuration
    • B60R2021/23169Inflatable members characterised by their shape, construction or spatial configuration specially adapted for knee protection
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/231Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/233Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
    • B60R2021/23316Inner seams, e.g. creating separate compartments or used as tethering means

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は自動車の急減速に際して自動車の乗員の膝を支えるための膝支持装置であって、自動車のダッシュボードのコンソールの取付部に取り付けられるように備えられたニーバッグと、ニーバッグを膨張させるためのガス発生器とからなる膝支持装置に関する。
【0002】
【従来の技術】
この種の既知の装置において、膨張したニーバッグの、乗員の膝を支えるために設けられた部分が、起こり得る接線方向力の成分に対して望ましい範囲でいつも安定であるわけではない。十分ではないが膨張したニーバッグの一定の安定性は、たとえばニーバッグに捕捉及び確保のための吊紐等をつけることで達成されるが、この方法は装置の製造を比較的に複雑かつ高価にする。既知の膝支持装置の別の欠点は、自動車のコンソール部の技術的構造的な要求のために、膝の支持のために設けられた部分が、生体力学的にあるいは身体的に理想的な作用点に位置するとは限らないということである。
【0003】
【発明が解決しようとする課題】
本発明の目的は、簡単な構造及び製造工程によって、膝支持装置の、膝を支持するために設けられた部分の確実な作用位置を保証し、かつ前記作用位置が横方向の力に対しても安定な、首記の種類の膝支持装置を提供することである。これに加えて、エアバッグの膨張を通じて、支持のための役割を果たす部分を、エアバッグの取付位置からずれた最適作用領域に位置させることも容易にできなければならない。
【0004】
【課題を解決するための手段】
本発明によれば、この目的は、ニーバッグが少なくとも1本の、特に垂直及び/または水平の、膨張可能なニーバッグの広がりの規制と、その位置を安定のための役割を果たすためのキルティングを有することによって、充足される。
【0005】
本発明による膝支持装置においては、ニーバッグはこのように少なくとも1箇所、好ましくは複数箇所でキルティングされて、エアマットレス状(いわゆる「エアベッド」状)をなす。このようにして、エアバッグが膨張した状態において所定の形状をとるように、ニーバッグにガス通路として機能するホース形状の部分が形成されている。驚くべきことに、エアバッグにキルティングするという簡単な手段によって、膨張したニーバッグが強力に安定化され、不都合な衝突時のニーバッグの逃げが防止されることが立証された。
【0006】
本発明の最も重要な利点は、上に挙げた機能を果たすための膝支持装置が、簡単な方法で安価に製造されるということである。すなわち、ニーバッグは乗員側とコンソール側の、2枚の布地層からなるのみで、言い換えるとコンソール側の布地が、最終的に取付部の方向、すなわち自動車の進行方向を向く。これら2枚の布地は、その結果として十分に閉じた容積を形成するように、共通の外周部に沿って互いに結合されるようになっている。また、その結果として所望の安定化通路の形状が作り出されるように、この外周部の内側において、縫合せ部位としての1個または2個以上のキルティングに沿って互いに結合されるようになっている。2枚の布地の結合は縫合によって容易に簡単に行うことができる。
【0007】
一方、発明の構成内において、所望の形状及び位置安定性を保証するために、上記以外に比較的複雑で、したがって高価な付加支持手段を有する必要はない。特に吊紐の取り付けを省略することができる。この吊紐は、ニーバッグの外部布地層を互いに結合した後にはじめて、かくして形成された封筒状のエアバッグの内側に取り付けられるのであるが、点状に把持するに過ぎないために、本発明と同様な安定性を保証することはできないのである。
【0008】
本発明による膝支持装置の製造は、縫合せによるキルティング部位の製造に際して、ニーバッグの外、特にコンソール側の外に、取付手段を同時に付することによって、より一段と単純化される。これらの取付手段はその後、ニーバッグを自動車の取付部に取り付ける役割を果たす。取付手段としては例えば耳部、環状留め具または鳩目を有してもよい。この場合、取付手段の取り付けのために別の製造工程を必要としない、という利点がある。
【0009】
本発明のもう一つの利点は、キルティングの結果としてニーバッグに形成されたホース状通路によって、エアバッグの膨張に際して、取付部におけるニーバッグの取り付けに関して、その位置を垂直または水平方向にずれさせ得るようなエアバッグの意図した位置決めが可能になることである。このようにして、乗員の支持のために設けられたエアバッグの部分を、既知の方法でエアバッグを膨張させることによって自動車の進行方向とは反対の方向に移動させることができるばかりではなく、前記進行方向と直角をなす移動成分によって、支持機能にとって特に効果的な位置に置くことができるのである。
【0010】
この有利な効果は、キルティングによってあらかじめエアバッグに形成され、膨張に際してガスで満たされる、エアバッグ内のホース形状の領域の固有な指向作用に基づいている。この効果を最適にするために、キルティングは任意の望ましい方向に施すことができ、例えばそれは対角線状であってもよく、また曲線状であってもよい。既知の吊紐は、この種の横方向の位置取りを達成するためには比較的に複雑かつ高価である上、不十分であることが知られている。
【0011】
例えば、本発明による膝支持装置が取り付けられる自動車の構造形式によっては、一体に折り畳まれたニーバッグを、ダッシュボード及びステアリングコラム部のかなり下方の取付部、たとえば自動車乗員のほぼ脛の高さあたりに取り付けることも好ましい。この場合は、ニーバッグに適当なキルティング、特に水平方向に伸びるキルティングを施すことによって、エアバッグの膨張に際してエアバッグの上方への動きを創出し、この結果、乗員の膝の支持のために設けられたニーバッグの部分が、乗員の膝の高さの、理想的な作用位置をとるようにすることが可能である。したがってこの場合にはニーバッグのコンソール側で、対応する布地の下部の領域を自動車の取付部に結合させれば十分である。
【0012】
本発明によるニーバッグの、とりわけ簡単な構造が得られるのは、ニーバッグが、膨張しない状態で広げて、ほぼ四角形の基本形状をなし、かつまさに2本の互いに平行な、垂直または水平方向のキルティングを備える場合である。
【0013】
自動車の取付部へのニーバッグの取り付けは、前述の取付手段、たとえば合成繊維のベルトまたは鋼製のケーブルによって、及び/またはエアバッグ布地を直接取付部に結合することによって、行うことができる。ガス発生器もまた、自動車のコンソールの取付部に収容されるようにすることが好ましい。
【0014】
本発明による膝支持装置においては、ニーバッグのキルティングと、これによる位置安定化の結果、既知の装置において通常用いられるニーバッグにおける負荷分散手段を、強制的に備える必要はない。驚くべきことに、別体の負荷分散手段を原則として省略して、製造が各段に廉価かつ単純になっても、支持力及び横方向力の分散に関して実質的な損失は生じないことが判明した。しかしながらガス発生器によって比較的高い圧力をかけてエアバッグを膨張させる必要があり、またこのような高い圧力に見合うように補強されたエアバッグを設計する必要がある。このようにして乗員の膝を支持するのに要求される対抗圧が保証され、またエアバッグに衝突する膝が、エアバッグに少ししか沈み込まないことが保証される。
【0015】
別体の負荷分散手段を有しない本実施例において、乗員の膝がちょうどエアバッグのキルティングに当たることによって、支持作用が不本意に弱められることを確実に避けるために、例えば膨張されたニーバッグに、膝を受けとめるための部位を意図的に設け、この部位の直近ではキルティングを省略することができる。例えば水平のキルティングを、支持のために設けられたこれらの部位の下方及び/または上方に配置することができる。
【0016】
その他の好適な手段として、コンソール側の布地の面積を乗員側の布地よりも大きくし、かつ合成されたニーバッグが膨張した状態では、両方の布地がほぼ同じ輪郭をとるようにしてもよい。このようにすれば、隣り合う二つのキルティングによって形成されたホース状部の周囲の大部分は、コンソール側の布地によって形成されるようになる。このような手段によって、膨張したエアバッグのキルティングが、最終的に自動車の進行方向に関して乗員側の高さに配置されるようになり、この結果ほぼ平坦で閉じた支持面がその場所に得られる。これに対して、ニーバッグの、2本の隣り合ったホース状部間のキルティングに必然的に形成される凹所はエアバッグのコンソール側に位置する。この凹所はこのように自動車の進行方向を向いているので、エアバッグの支持機能に否定的な効果を及ぼさない。
【0017】
しかしながら、本発明の膝支持装置において、ニーバッグの、支持されるべき乗員に最終的に面する側(乗員側)に、負荷分散プレートを備えることも、もちろん可能である。この負荷分散プレートは、ニーバッグの膨張によって、取付部から離れるように移動させることができる。これによって、乗員の膝が衝突した際に生じる力の十分な分散を保証することが容易になり、なおかつ本発明によって達成される利点はそのまま保たれる。特に、負荷分散手段を有する既知の膝支持装置と比較すれば、本発明によるキルティングの結果として、ニーバッグの形状及び位置の安定性が著しく増加し、またこの安定性が比較的簡単な製法によって達成される。
【0018】
負荷分散手段を有する既知の膝支持装置との比較における特筆すべき利点として、本発明のこの実施例において、ニーバッグに備えられた負荷分散プレートを、横方向の移動成分によって、支持機能にとって特に効果的な位置に位置させることができる点がある。したがって、負荷分散プレートは、支持機能を果たすニーバッグの乗員側の布地層の一部分に沿って取り付けられるだけで、装置の重量に関しても十分かつ効果的となり得る。
【0019】
負荷分散プレートを有する本実施例の更なる利点として、後に負荷分散プレートをニーバッグに取り付ける役割を果たす取付手段(耳部、環状留め具、鳩目など)を、キルティングの製造と同時にニーバッグの乗員側外面に付けることができることも明らかである。これによってさらに製造が簡単になる。
【0020】
同様の方法により、キルティングの製造と同時に、負荷分散プレートをニーバッグに取り付けることもでき、これにより製造工程がさらに省略される。
【0021】
負荷分散プレートは好ましくは可撓製のプラスチックからなり、その外観は自動車コンソールの外観に調和している。プレートはアルミニウム製部分、及び/またはカーボン繊維製のプレートまたはリブで補強されてもよい。「プレート」の語は、非平面の、特に例えば凹面あるいは凸面の、丸みを帯びた形状を除外するものではない。また負荷分散プレートは、ニーバッグの乗員側の層における一体化された一部であってもよい。このためには乗員側の層は比較的剛性を持たせて設計されてもよい。
【0022】
本発明のその他の好ましい実施例は従属の請求項に示される。以下において本発明を、図面を参照しつつ例示的に説明する。
【0023】
【発明の実施の形態】
図1及び図2はいずれも本発明による膝支持装置の、膨張した状態のニーバッグ11を示している。このニーバッグ11は、四角形の基本形状からなり、共通の外周に沿う縫い目17によって互いに結合された乗員側布地層13とコンソール側布地層15とからなる。
【0024】
この二つの布地層13、15は、またニーバッグ11の中央の領域において、ニーバッグ11が自動車内で最終的に決められる作用位置に関して、それぞれ水平(図1)及び垂直(図2)方向に延在する2本の平行なキルティング19によって、互いに結合されている。
【0025】
これら2本の隣接するキルティング19と、縫い目17すなわちニーバッグ11の外周とによって、3個のホース形状の領域21が形成される。これらのホース形状領域は、それぞれキルティング19に平行かつ隣接して延在し、ニーバッグ11が膨張したときにとる形状及び位置とこの該形状及び位置の安定性に決定的な影響を与える。キルティング19の長手方向の端部において、ホース形領域21は互いに連通しており、ニーバッグ11の膨張を可能にするために必要なガスが各領域21の間を流れるようになっている。
【0026】
図1及び図2に示されたニーバッグ11は、図示しないガス発生器から十分に高い圧力のガスが供給された場合に、自動車乗員の膝に効果的な支持を与えるための乗員側布地層13を有する本発明による膝支持装置の一部としての役割を果たす。これに代えて、膝の衝突によって生じる局部的な力を横方向に分散させる負荷分散プレートを、乗員側布地13に取り付けることも可能である。
【0027】
図3及び図4はいずれも概略横断面図であり、自動車のコンソール23を示し、このコンソールはダッシュボード部25と、ステアリングコラム部27と、ステアリングコラム部27の下方に位置し、本発明による膝支持装置を備えた取付部29とからなる。図3に示された膝支持装置は待機状態にあり、図4に示された膝支持装置は作動状態にある。
【0028】
膝支持装置は、コンソール23の内部に配置されたガス発生器31と、コンソール23の取付部29を覆う負荷分散プレート33を有している。負荷分散プレート33とコンソール23の間には、例えば図1のエアバッグ11に類似した形状をなすようなニーバッグ35が備えられている。ニーバッグ35は図3の待機状態においては、一体に折り畳まれて、負荷分散プレート33で覆われ、図4の作動状態においては、ガス発生器31によって膨張する。この目的のためにニーバッグ35は、ガス発生器31に連通する開口部を有する。
【0029】
ニーバッグ35は、ニーバッグが膨張した状態(図4)において、最終的に互いに平行に延在する3本のホース形状領域を有することを目的として、図4の図面の平面に直角に、したがって最終的に水平に延在するような2本のキルティング37を有する。
【0030】
キルティング37の経路に対応して図面の平面に直角に伸びているニーバッグの取付手段としての耳部39が、キルティング37によってニーバッグ35の外面の表裏両側、すなわちコンソール側、負荷分散プレート側にそれぞれ縫いつけられている。このニーバッグ35のコンソール側の取付用の耳部39のキルティング37に縫い付けられた側と反対側の自由端は取付用クランプ41でコンソール23の取付部29に、乗員側の負荷分散プレートの耳部39の自由端は取付点43で負荷分散プレート33に、それぞれ結合されている。これに加えて負荷分散プレート33の上端部は、取付点45に沿ってニーバッグ35の上端部に連結されている。
【0031】
膝支持装置が作動した際、すなわちニーバッグ35がガス発生器31(図4)によって膨張した際、負荷分散プレート33はキルティング37の結果として、一定であると同時に安定した位置をとる。負荷分散プレート33はニーバッグ35の膨張によって、一方では取付部29から遠ざかるように、すなわち図示しない乗員に向かって移動する。他方、負荷分散プレート33はエアバッグ35の膨張によって上方への移動47を行う。このようにして負荷分散プレート33は乗員の膝を支持するための、生体力学的に理想的な作用位置に位置するようになる。図4に示された、この負荷分散プレート33の位置は、ステアリングコラム27の直下の部位に膝支持装置を収容する十分なスペースがないため、単に水平方向への移動によっては、何なく達成させることはできなかったものである。
【0032】
【発明の効果】
以上に述べたように、安価で簡単な方法により製造された本発明のエアバッグの膨張を通じて、ニーバッグの支持のための役割を果たす部分を、バッグの取付位置からずれた生体力学的な最適作用領域に容易に位置させることができるという効果を奏する。
【図面の簡単な説明】
【図1】本発明による膝支持装置のキルティングされたニーバッグの斜視図。
【図2】本発明による膝支持装置のキルティングされたニーバッグの斜視図。
【図3】本発明による膝支持装置が取り付けられた自動車のコンソールの横断面図。
【図4】図3において膝支持装置が作動した状態を示した横断面図。
【符号の説明】
11 ニーバッグ
13 乗員側布地層
15 コンソール側布地層
17 縫い目
19 キルティング
21 ホース形状領域
23 コンソール
25 ダッシュボード部
27 ステアリングコラム部
29 取付部
31 ガス発生器
33 負荷分散プレート
35 ニーバッグ
37 キルティング
39 取付用耳部
47 上方への移動
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a knee support device for supporting a knee of an automobile occupant during a sudden deceleration of the automobile, and a knee bag provided to be attached to a mounting portion of a console of an automobile dashboard, and for inflating the knee bag The present invention relates to a knee support device including a gas generator.
[0002]
[Prior art]
In known devices of this kind, the part of the inflated knee bag provided to support the occupant's knee is not always stable to the extent desired for the possible tangential force component. A certain stability of the inflated but not fully inflated knee bag is achieved, for example, by attaching a strap or the like to the knee bag for capture and securing, but this method makes the manufacture of the device relatively complex and expensive. . Another drawback of the known knee support device is that due to the technical and structural requirements of the console part of the car, the part provided for knee support is ideal for biomechanical or physical action. It is not necessarily located at a point.
[0003]
[Problems to be solved by the invention]
It is an object of the present invention to ensure a reliable working position of a portion of the knee support device provided to support the knee, with a simple structure and manufacturing process, and the working position against a lateral force. It is to provide a knee support device of the kind mentioned above which is also stable. In addition to this, it should be possible to easily locate the portion that plays a role of support through the inflation of the airbag in an optimum working area that is deviated from the mounting position of the airbag.
[0004]
[Means for Solving the Problems]
According to the invention, this object comprises the regulation of the spread of at least one, in particular vertical and / or horizontal, inflatable knee bag and a quilting to play a role in stabilizing its position. To be satisfied.
[0005]
In the knee support device according to the present invention, the knee bag is thus quilted in at least one place, preferably a plurality of places, to form an air mattress (so-called “air bed”). In this way, a hose-shaped portion that functions as a gas passage is formed in the knee bag so as to take a predetermined shape in a state where the airbag is inflated. Surprisingly, it has been demonstrated that the simple means of quilting the airbag strongly stabilizes the inflated knee bag and prevents the knee bag from escaping in the event of an unfavorable collision.
[0006]
The most important advantage of the present invention is that knee support devices for performing the functions listed above are manufactured in a simple manner and inexpensively. In other words, the knee bag is composed of only two fabric layers on the occupant side and the console side. In other words, the fabric on the console side finally faces the direction of the mounting portion, that is, the traveling direction of the automobile. The two fabrics are joined together along a common outer periphery so as to result in a sufficiently closed volume. Further, as a result, the shape of the desired stabilization passage is created, and the inside of the outer peripheral portion is coupled to each other along one or more quiltings as a stitched portion . . Binding the two fabric can be performed in sewing case therefore readily and easily.
[0007]
On the other hand, in the configuration of the invention, in order to ensure the desired shape and position stability, it is not necessary to have additional support means that are relatively complex and therefore expensive. In particular, attachment of the hanging strap can be omitted. This hanging strap is attached to the inside of the envelope-shaped airbag thus formed only after the outer fabric layers of the knee bag are joined to each other. It is not possible to guarantee stable stability.
[0008]
Preparation of the knee supporting device according to the invention, in the production of quilting site by sewing together the outer surface of the knee bag, particularly on the outer surface of the console side, by subjecting the attachment means at the same time, it is more further simplified. These attachment means then serve to attach the knee bag to the attachment part of the automobile. As an attachment means, you may have an ear | edge part, an annular | circular fastener, or an eyelet, for example. In this case, there is an advantage that a separate manufacturing process is not required for attaching the attachment means.
[0009]
Another advantage of the present invention is that the hose-like passage formed in the knee bag as a result of quilting allows the position of the knee bag to be shifted in the vertical or horizontal direction when the airbag is inflated. The intended positioning of the airbag is possible. In this way, not only can the portion of the airbag provided for occupant support be moved in a direction opposite to the direction of travel of the vehicle by inflating the airbag in a known manner, The moving component perpendicular to the direction of travel can be placed in a particularly effective position for the support function.
[0010]
This advantageous effect is based on the inherent directing action of the hose-shaped region in the airbag that is pre-formed on the airbag by quilting and filled with gas upon inflation. In order to optimize this effect, quilting can be applied in any desired direction, for example it may be diagonal or curvilinear. Known hanging straps are known to be relatively complex and expensive and insufficient to achieve this type of lateral positioning.
[0011]
For example, depending on the type of vehicle construction to which the knee support device according to the present invention is attached, the knee bag folded together may be attached to a mounting portion substantially below the dashboard and the steering column portion, for example, about the height of the shin of the vehicle occupant. It is also preferable to attach. In this case, by applying appropriate quilting to the knee bag, in particular horizontal quilting, it creates an upward movement of the airbag when the airbag is inflated, and as a result is provided to support the knee of the occupant. It is possible that the knee bag portion takes an ideal working position at the height of the occupant's knee. Therefore, in this case, it is sufficient to connect the lower region of the corresponding fabric to the mounting portion of the automobile on the console side of the knee bag.
[0012]
A particularly simple construction of the knee bag according to the invention is obtained when the knee bag is unexpanded and spreads to form a substantially square basic shape and exactly two parallel, vertical or horizontal quilts. This is the case.
[0013]
The attachment of the knee bag to the mounting part of the motor vehicle can be carried out by the above-mentioned mounting means, for example by means of synthetic fiber belts or steel cables and / or by coupling the airbag fabric directly to the mounting part. The gas generator is also preferably housed in the mounting portion of the automobile console.
[0014]
In the knee support device according to the present invention, as a result of the quilting of the knee bag and the stabilization of the position thereof, it is not necessary to forcibly provide the load distribution means in the knee bag normally used in known devices. Surprisingly, it turns out that there is no substantial loss in terms of supporting and lateral force distribution, even if the separate load distribution means are omitted in principle, and the production is cheaper and simpler in each stage. did. However, it is necessary to inflate the airbag with a relatively high pressure by the gas generator, and it is necessary to design a reinforced airbag to meet such high pressure. In this way, the counter pressure required to support the occupant's knee is ensured, and the knee that collides with the airbag is guaranteed to sink slightly into the airbag.
[0015]
In this embodiment without a separate load balancing means, in order to ensure that the occupant's knees just hit the airbag quilting and that the support action is not unintentionally weakened, for example in an inflated knee bag, A part for receiving the knee is intentionally provided, and quilting can be omitted in the immediate vicinity of this part. For example, horizontal quilting can be placed below and / or above these sites provided for support.
[0016]
As another suitable means, when the area of the fabric on the console side is larger than the fabric on the passenger side and the synthesized knee bag is inflated, both fabrics may have substantially the same contour. If it does in this way, most of the circumference | surroundings of the hose-like part formed of two adjacent quiltings will come to be formed with the cloth by the side of a console. By such means, the inflated airbag quilting will eventually be placed at the occupant side height with respect to the direction of travel of the vehicle, resulting in a substantially flat and closed support surface in place. . On the other hand, a recess inevitably formed for quilting between two adjacent hose-like parts of the knee bag is located on the console side of the airbag. Since this recess faces the direction of travel of the automobile in this way, it does not have a negative effect on the support function of the airbag.
[0017]
However, in the knee support device of the present invention, it is of course possible to provide a load distribution plate on the side of the knee bag that finally faces the occupant to be supported (occupant side). The load distribution plate can be moved away from the mounting portion by the expansion of the knee bag. This makes it easy to ensure sufficient dispersion of the force generated when the occupant's knees collide, while still maintaining the advantages achieved by the present invention. In particular, as compared to known knee support devices with load balancing means, as a result of the quilting according to the invention, the stability of the shape and position of the knee bag is significantly increased and this stability is achieved by a relatively simple process. Is done.
[0018]
As a notable advantage in comparison with known knee support devices with load distribution means, in this embodiment of the invention, the load distribution plate provided in the knee bag is particularly effective for the support function by the lateral movement component. There is a point that can be located at a certain position. Thus, the load distribution plate can be sufficient and effective in terms of the weight of the device only by being attached along a portion of the fabric layer on the occupant side of the knee bag that performs the support function.
[0019]
A further advantage of this embodiment having a load distribution plate is that the mounting means (ears, annular fasteners, eyelets, etc.), which later serve to attach the load distribution plate to the knee bag, are installed on the occupant outer surface of the knee bag simultaneously with the production of the quilting. It is also clear that it can be attached to. This further simplifies manufacturing.
[0020]
In a similar manner, the load distribution plate can be attached to the knee bag simultaneously with the production of the quilting, thereby further omitting the production process.
[0021]
The load distribution plate is preferably made of flexible plastic and its appearance matches the appearance of the automobile console. The plate may be reinforced with aluminum parts and / or carbon fiber plates or ribs. The term “plate” does not exclude non-planar, in particular concave or convex, rounded shapes. The load distribution plate may be an integrated part of the occupant side layer of the knee bag. For this purpose, the occupant side layer may be designed with a relatively high rigidity.
[0022]
Other preferred embodiments of the invention are indicated in the dependent claims. Hereinafter, the present invention will be described by way of example with reference to the drawings.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
1 and 2 both show a knee bag 11 in an inflated state of a knee support device according to the present invention. The knee bag 11 has a rectangular basic shape, and includes an occupant-side fabric layer 13 and a console-side fabric layer 15 that are connected to each other by a seam 17 along a common outer periphery.
[0024]
The two fabric layers 13, 15 also extend in the horizontal (FIG. 1) and vertical (FIG. 2) directions in the central region of the knee bag 11, respectively, with respect to the working position where the knee bag 11 is finally determined in the vehicle. Are connected to each other by two parallel quiltings 19.
[0025]
These two adjacent quiltings 19 and the seam 17, that is, the outer periphery of the knee bag 11, form three hose-shaped regions 21. These hose-shaped regions each extend parallel and adjacent to the quilting 19 and have a decisive influence on the shape and position taken when the knee bag 11 is inflated and the stability of the shape and position. At the longitudinal ends of the quilting 19, the hose-shaped regions 21 communicate with each other so that the gas necessary to allow the knee bag 11 to expand flows between the regions 21.
[0026]
The knee bag 11 shown in FIGS. 1 and 2 has an occupant side fabric layer 13 for providing effective support to an automobile occupant's knee when a sufficiently high pressure gas is supplied from a gas generator (not shown). It serves as a part of the knee support device according to the present invention. Instead of this, it is also possible to attach to the occupant-side fabric 13 a load distribution plate that distributes a local force generated by a knee collision in the lateral direction.
[0027]
3 and 4 are both schematic cross-sectional views showing an automobile console 23, which is located below the dashboard portion 25, the steering column portion 27, and the steering column portion 27, according to the present invention. It consists of the attachment part 29 provided with the knee support apparatus. The knee support device shown in FIG. 3 is in a standby state, and the knee support device shown in FIG. 4 is in an operating state.
[0028]
The knee support device includes a gas generator 31 disposed inside the console 23 and a load distribution plate 33 that covers the attachment portion 29 of the console 23. Between the load distribution plate 33 and the console 23, for example, a knee bag 35 having a shape similar to the airbag 11 of FIG. 1 is provided. The knee bag 35 is folded together and covered with the load distribution plate 33 in the standby state of FIG. 3, and is expanded by the gas generator 31 in the operating state of FIG. 4. For this purpose, the knee bag 35 has an opening communicating with the gas generator 31.
[0029]
The knee bag 35 is intended to have three hose-shaped regions that ultimately extend parallel to each other in the inflated state of the knee bag (FIG. 4), so that it is perpendicular to the plane of the drawing of FIG. And two quiltings 37 extending horizontally.
[0030]
Ear portions 39 as knee bag mounting means extending perpendicularly to the plane of the drawing corresponding to the path of the quilting 37 are sewn to the front and back sides of the outer surface of the knee bag 35 by the quilting 37 , that is, the console side and the load distribution plate side. It has been. The mounting portion 29 of the console 23 on the opposite side for with the free end preparative clamp 41 and sewn side quilted 37 of the ear portion 39 for mounting the console side of the knee bag 35, the passenger-side load balancing plate The free ends of the ears 39 are coupled to the load distribution plate 33 at attachment points 43, respectively. In addition, the upper end portion of the load distribution plate 33 is connected to the upper end portion of the knee bag 35 along the attachment point 45.
[0031]
When the knee support device is actuated, i.e., when the knee bag 35 is inflated by the gas generator 31 (FIG. 4), the load distribution plate 33 assumes a constant and stable position as a result of the quilting 37. The load distribution plate 33 is moved away from the mounting portion 29 on the one hand, that is, toward the occupant (not shown) by the expansion of the knee bag 35. On the other hand, the load distribution plate 33 moves upward 47 due to the inflation of the airbag 35. In this way, the load distribution plate 33 comes to be positioned at a biomechanically ideal working position for supporting the occupant's knee. The position of the load distribution plate 33 shown in FIG. 4 can be achieved by simply moving in the horizontal direction because there is not enough space to accommodate the knee support device at a position directly below the steering column 27. It was something that could not be done.
[0032]
【The invention's effect】
As described above, through the inflation of the airbag of the present invention manufactured by an inexpensive and simple method, the portion that plays a role of supporting the knee bag is shifted from the position where the bag is attached to the biomechanical optimum action. There exists an effect that it can be easily located in a field.
[Brief description of the drawings]
FIG. 1 is a perspective view of a quilted knee bag of a knee support device according to the present invention.
FIG. 2 is a perspective view of a quilted knee bag of a knee support device according to the present invention.
FIG. 3 is a cross-sectional view of an automobile console to which a knee support device according to the present invention is attached.
4 is a cross-sectional view showing a state in which the knee support device is activated in FIG. 3;
[Explanation of symbols]
11 Knee bag 13 Crew side fabric layer 15 Console side fabric layer 17 Seam 19 Quilting 21 Hose shape region 23 Console 25 Dashboard part 27 Steering column part 29 Attachment part 31 Gas generator 33 Load distribution plate 35 Knee bag 37 Quilting 39 Ear part for attachment 47 Move upward

Claims (11)

自動車のコンソール(23)の取付部(29)に取り付けられるように備えられたニーバッグ(11,35)と、このニーバッグを膨張させるためのガス発生器(31)とを有する、自動車の急減速に際して自動車内の乗員の膝を支持するための膝支持装置において、
前記ニーバッグ(11,35)は、2枚の布地層(13,15)を結合する、少なくとも1本の垂直または水平の線状をなすように形成された、縫合わせ部位であるキルティング(19,37)を有し、前記コンソール(23)側の前記キルティング(19,37)の外面に、取付耳部(39)の一端が縫いつけられ、前記取付耳部(39)の反対側端は前記取付部(29)に固定され、前記ニーバッグ(11,35)の膨張時に、前記キルティング(19,37)が該ニーバッグの広がりを規制するとともに、前記取付耳部(39)が膨張するニーバッグの移動方向を規制することを特徴とする膝支持装置。
Upon sudden deceleration of an automobile, the vehicle has a knee bag (11, 35) provided to be attached to a mounting portion (29) of an automobile console (23) and a gas generator (31) for inflating the knee bag. In a knee support device for supporting a passenger's knee in an automobile,
The knee bag (11, 35) is a quilting (19, 19), which is a stitched portion formed so as to form at least one vertical or horizontal line connecting the two fabric layers (13, 15). has 37), the outer surface of the quilting of said console (23) side (19,37), one end sewn mounting ear (39), the opposite end of the mounting lug (39) said mounting is fixed to the part (29), upon inflation of the knee bag (11, 35), together with the quilting (19,37) to regulate the spread of the kneebag, the direction of movement of knee bag that the mounting lug (39) is inflated A knee support device characterized by restricting.
前記ニーバッグ(11,35)は、乗員側とコンソール側の布地層(13,15)のみを有し、該2枚の布地層が、それぞれの外周(17)及び前記キルティング(19,37)部位において互いに縫い合わせ結合されたことを特徴とする請求項1に記載の膝支持装置。 The knee bag (11, 35) has only the occupant-side and console-side fabric layers (13, 15), and the two fabric layers have their outer periphery (17) and the quilting (19, 37) site. The knee support device according to claim 1, wherein the knee support devices are stitched together . 前記ニーバッグ(11,35)のための前記取付部(29)が、乗員の脛の高さに備えられたことを特徴とする、請求項1または請求項2に記載の膝支持装置。 The mounting portion (29), characterized in that provided in the height of the occupant of the shin, knee brace according to claim 1 or claim 2 for the knee bag (11, 35). 膨張した状態における前記ニーバッグ(11,35)が、そのコンソール側の下部領域においてのみ、前記取付部(29)に取り付けられるようにしたことを特徴とする請求項1乃至請求項3のいずれか1項に記載の膝支持装置。 Wherein the expanded state kneebag (11, 35) is only in the lower region of the console side, either one of claims 1 to 3, characterized in that it has to be attached to the attachment portion (29) 1 The knee support device according to Item. 乗員の支持のために、ニーバッグ(11,35)の一部に設けられた負荷分散プレート(33)の、前記取付部(29)に対する上方への移動が、前記取付耳部(39)に規制された状態での前記ニーバッグ(11,35)の膨張によって生じ、前記ニーバッグ(11,35)の一部が乗員の膝の高さに達するようにしたことを特徴とする請求項1乃至請求項4のいずれか1項に記載の膝支持装置。 For passenger support, knee-bag of (11, 35) the load distribution plate (33) provided in a part of, the upward movement of relative to the mounting portion (29), regulating the mounting lug (39) caused by the expansion of the knee bag (11, 35) in the state, according to claim 1 to claim a portion of the knee bag (11, 35) is characterized in that to reach the height of the knees of the vehicle occupant The knee support device according to any one of 4. 前記ニーバッグ(11,35)の中央領域に、2本の平行な、垂直または水平の前記キルティング(19,37)が設けられたことを特徴とする請求項1乃至請求項5のいずれか1項に記載の膝支持装置。In the central region of the knee bag (11, 35), two parallel of any one of claims 1 to 5 vertical or horizontal of the quilting (19,37), characterized in that the provided The knee support device described in 1. 前記ニーバッグ(11,35)は、膨張していない状態において、乗員側から見て四角形状をなすことを特徴とする請求項1乃至請求項6のいずれか1項に記載の膝支持装置。The knee support device according to any one of claims 1 to 6, wherein the knee bag (11, 35) has a quadrangular shape when viewed from the occupant side when the knee bag (11, 35) is not inflated. 前記負荷分散プレート(33)が、乗員の支持のために、前記ニーバッグ(11,35)に設けられ、前記ニーバッグの膨張によって、前記取付部(29)から離れるように移動可能なことを特徴とする請求項に記載の膝支持装置。Wherein said load distribution plate (33), for the occupant of the support, the provided kneebag (11, 35), by the expansion of pre-Symbol knee bag, the movable away from said mounting portion (29) The knee support device according to claim 5 . 前記ニーバッグ(11,35)の乗員側の前記キルティング(19,37)の外面に、他の取付耳部(39)の一端が縫い付けられ、該他の取付耳部(39)を介して前記負荷分散プレート(33)が前記ニーバッグ(11,35)の乗員側に取り付けられたことを特徴とする請求項8に記載の膝支持装置。The outer surface of the passenger side of the quilting (19,37) of the knee bag (11, 35), sewn at one end of the other mounting ear (39), said through said other mounting ear portion (39) The knee support device according to claim 8, wherein a load distribution plate (33) is attached to an occupant side of the knee bag (11, 35). 前記負荷分散プレート(33)が、膨張した前記ニーバッグ(11,35)の乗員側の上部領域に沿って延在することを特徴とする請求項8または請求項9に記載の膝支持装置。 The load distribution plate (33) is, the knee support apparatus of claim 8 or claim 9, characterized in that extending along the upper region of the occupant side of the inflated the knee bag (11, 35). 前記負荷分散プレート(33)が可撓製プラスチックからなり、軽金属材料または繊維強化材料によって補強されたことを特徴とする請求項乃至請求項10のいずれか1項に記載の膝支持装置。The knee support device according to any one of claims 8 to 10, wherein the load distribution plate (33) is made of a flexible plastic and reinforced with a light metal material or a fiber reinforced material.
JP2000001624A 1999-01-11 2000-01-07 Knee support Expired - Lifetime JP4533487B2 (en)

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